import turtle

t = turtle.Turtle()

t.color("green")

t.begin_fill()

for _ in range(4):
    t.forward(100)
    t.left(90)

t.forward(100)

for _ in range(4):
    t.forward(100)
    t.left(90)

t.forward(100)

for _ in range(4):
    t.forward(100)
    t.left(90)

t.left(90)
t.forward(100)

for _ in range(4):
    t.forward(100)
    t.left(90)

t.right(180)
t.forward(100)


t.end_fill()

turtle.done()
